Enum boa::syntax::ast::node::declaration::BindingPatternTypeObject

pub enum BindingPatternTypeObject {
    Empty,
    SingleName {
        ident: Box<str>,
        property_name: Box<str>,
        default_init: Option<Node>,
    },
    RestProperty {
        ident: Box<str>,
        excluded_keys: Vec<Box<str>>,
    },
    BindingPattern {
        ident: Box<str>,
        pattern: DeclarationPattern,
        default_init: Option<Node>,
    },
}

BindingPatternTypeObject represents the different types of bindings that an object binding pattern may contain.

More information:

• ECMAScript reference: 14.3.3 Destructuring Binding Patterns - ObjectBindingPattern

Variants

Empty

Empty represents an empty object binding pattern e.g. { }.

SingleName

SingleName represents one of the following properties:

• SingleNameBinding with an identifier and an optional default initializer.
• BindingProperty with an property name and a SingleNameBinding as the BindingElement.

More information:

• ECMAScript reference: 14.3.3 Destructuring Binding Patterns - SingleNameBinding
• ECMAScript reference: 14.3.3 Destructuring Binding Patterns - BindingProperty

Fields of SingleName

ident: Box<str>property_name: Box<str>default_init: Option<Node>

RestProperty

RestProperty represents a BindingRestProperty with an identifier.

It also includes a list of the property keys that should be excluded from the rest, because they where already assigned.

More information:

• ECMAScript reference: 14.3.3 Destructuring Binding Patterns - BindingRestProperty

Fields of RestProperty

ident: Box<str>excluded_keys: Vec<Box<str>>

BindingPattern

BindingPattern represents a BindingProperty with a BindingPattern as the BindingElement.

Additionally to the identifier of the new property and the nested binding pattern, this may also include an optional default initializer.

More information:

• ECMAScript reference: 14.3.3 Destructuring Binding Patterns - BindingProperty

Fields of BindingPattern

ident: Box<str>pattern: DeclarationPatterndefault_init: Option<Node>

Trait Implementations

impl Clone for BindingPatternTypeObject

fn clone(&self) -> BindingPatternTypeObject

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BindingPatternTypeObject

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for BindingPatternTypeObject

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for BindingPatternTypeObject

fn drop(&mut self)

Executes the destructor for this type.

impl Finalize for BindingPatternTypeObject

fn finalize(&self)

impl PartialEq<BindingPatternTypeObject> for BindingPatternTypeObject

fn eq(&self, other: &BindingPatternTypeObject) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &BindingPatternTypeObject) -> bool

This method tests for !=.

impl Trace for BindingPatternTypeObject

unsafe fn trace(&self)

Marks all contained Gcs.

unsafe fn root(&self)

Increments the root-count of all contained Gcs.

unsafe fn unroot(&self)

Decrements the root-count of all contained Gcs.

fn finalize_glue(&self)

Runs Finalize::finalize() on this object and all contained subobjects

impl StructuralPartialEq for BindingPatternTypeObject